Fungicide (2002)

Not the best or most entertaining killer mushroom film (that would be "Matango, Fungus from Hell"), this looks like a film thrown together in a couple of days by a few guys with some time on their hands and maybe a couple thousand dollars. A scientist spills a vial of serum he's developed and it seeps into the soil at a bed and breakfast where it gets absorbed by mushrooms, which then grow to be hand puppet mushrooms, then CGI (well, 1980's era home video computer effects) and finally guys in what look like trenchcoats with oversized Asian straw hats and gloves. And the mushrooms are killers that need to be destroyed. There's a climactic fight scene that's as bad as any grade school pageant and it takes forever. There's even a music video over the closing credits. It's awful trash and they knew it; if you want to poke fun at something while drunk, you're exactly the audience they aimed for.